new system advice

Hi .  I have 2005 Sunfire and am thinking of replacing my stock system.  I want to go with the following set-up and was wondering whether anyone had any advice or warnings about the setup I am looking at in regards to speaker fit and placement, powering, or product choice.

MB Quart QSC213  up front 50-120W

MB Quart DKE169  in the rear 60-140W

Infinity Perfect 12.1 Subwoofer

Eclipse XA4000 (125W x 4)

Eclipse XA1000 (320W x 1)

I'm not sure if the speaker sizes are correct for that vehicle, but assuming they are, It looks like you're going for a sound quality set-up.  You will probably be satisfiied with that set up, however, for the price of the mb quart's you could get CDT audio (best components I have ever heard for the money--I own them and I actually have them running off the xa4000 amp.  You can get them at woofersetc.com).  The perfect 12.1 plays pretty loud, but is definitely not designed for SQ.  If you're looking for something that'll handle around 400 watts RMS and you're looking for high quality bass, I'd go with JL, MTX, or Eclipse